are they your gongd friends 改为单数或复数形式.怎么改?

问题描述:

are they your gongd friends 改为单数或复数形式.怎么改?

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is he/she your good friend?

Is he /she your good friend?

Is he your good friend?

Is he/she your good friend?

Are they your good friends? 他们是你的好朋友们吗?
改为单数形式: Is she your good friend? 她是你的好朋友吗?